Commitments and Contingencies (Details) (USD $)
0 Months Ended 12 Months Ended
Dec. 01, 2014
item
Dec. 27, 2014
Dec. 28, 2013
Dec. 29, 2012
Minimum rental commitments under non-cancellable operating leases        
2014   $ 1,979,000    
2015   1,865,000    
2016   1,545,000    
2017   1,008,000    
2018   952,000    
Thereafter   5,764,000    
Total   13,113,000    
Maximum period for purchase commitments for certain ingredients, packaging materials and energy   12 months    
Commitments        
Rental expense under operating leases   $ 2,600,000 $ 1,800,000 $ 1,600,000
Number of new plaintiffs under the legal proceedings 2      
License Agreement for Sheeting and Frying Process Technology [Member]        
Commitments        
Threshold percentage of sales decline due to availability of similar product, for release from royalty obligations   10.00%    
License Agreement with Seattles Best Coffee LLC [Member]        
Commitments        
Extension period of license subject to meeting of certain sales targets   5 years